Central rotary catch rock machine: grab rock machine arrangement and bucket to catch the rock focal rotary machine how much money, to ensure that does not appear to grasp the rock face in a corner. When the center of rotation of a single hook lifting grab rock machine, grab bucket rock machine centers and each center corresponds to the center placed on both sides of the wellbore; with two single hook lifting two buckets were placed on both sides should grasp rock machine center ; with a double hook lifting center rotary catch rock machine Which is good, when a single hook lifting Jiangxi center rotary catch rock machine, three buckets were placed on both sides should grasp rock machine center. Central rotary catch rock machine rules: Action-operated valve is flexible, location is correct. Check for air leakage and damage to the pipeline Have tubing, pipe joints are tightened. Clear grab refuse and debris floating rock machine. Face In addition to allowing the suspension of hanging pump, the other conduit extends allowed cable hanging plate less.